NO924552L - Fremgangsmaate og anordning for koding av digitalt audiosignal - Google Patents

Fremgangsmaate og anordning for koding av digitalt audiosignal

Info

Publication number
NO924552L
NO924552L NO92924552A NO924552A NO924552L NO 924552 L NO924552 L NO 924552L NO 92924552 A NO92924552 A NO 92924552A NO 924552 A NO924552 A NO 924552A NO 924552 L NO924552 L NO 924552L
Authority
NO
Norway
Prior art keywords
bits
critical
bands
digital signals
transmitted
Prior art date
Application number
NO92924552A
Other languages
English (en)
Other versions
NO924552D0 (no
Inventor
Kenzo Akagiri
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3091188A external-priority patent/JP3060577B2/ja
Priority claimed from JP3091187A external-priority patent/JP3060576B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of NO924552D0 publication Critical patent/NO924552D0/no
Publication of NO924552L publication Critical patent/NO924552L/no

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/665Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

I en effektiv anordning til koding av et digitalt signal der anordningen er Innrettet til å omforme (11) et signal på frekvensaksen for å dele signalet på frekvensaksen l signalkomponenter for hver blokk ved adaptlvt tildelte bltantall anvendes det en løsning med ortogonal omforming 11 av et digitalt inngangselgnal for å dele det ortogonalt onformede signal i signalkomponenter for hvert kritisk bånd for å kode signalkomponentene ved adaptlv tildeling av bitantall basert på et tillatt nivå for hvert kritiske bånd til utførelse av flytende behandling av dette der det ved utførelse av den nytende behandling av hver av en flerhet av små blokker son hver har en båndbredde som er smalere enn båndbredden for det kritiske bånd anvendes en løsning for informasjon om ordlengde S3 for en liten blokk blant de små blokker l de respektive kritiske bånd hvorved antall biter for ordlengde reduseres slik at det blir mulig å utføre bitkomprlmerlng l en høyere grad. Ifår det gjelder utførelse av den flytende behandling Sl av hver av en flerhet av små blokker son hver har en båndbredde mindre enn i båndbredden for det kritiske bånd anvendes det en løsning med overføring, istedet for av flytende koeffisienter Sl for de respektive kritiske bånd av informasjon om et tillatt støynivå S2 for hvert kritiske bånd og ordleng- dene S3 for de små blokker hvorved antall biter som skal overføres blir redusert slik at det blir mulig å utføre bltkomprlmerlng i høyere grad. Ved utførelse av den nytende behandling av hver liten blokk hvis båndbredde er smalere enn for det kritiske bånd anvendes det l tillegg en løsning med overføring av informasjon om ordlengde S3 svarende til tildelte bltantall og med overføring, Istedet for av flytende koeffisienter, informasjon som angis på en kvantlserlngs- tabell S6 knyttet til tillatte støynivåer som hver har sitt bestenmelsesområde forskjøvet l en retning mot ¿ lavere nivåer med et på forhånd bestemt nivå fra et slgnalnlvåonråde l det kritiske bånd hvorved bitkomprlmerlng kan utføres i høyere grad.
NO92924552A 1991-03-29 1992-11-25 Fremgangsmaate og anordning for koding av digitalt audiosignal NO924552L (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3091188A JP3060577B2 (ja) 1991-03-29 1991-03-29 ディジタル信号符号化方法
JP3091187A JP3060576B2 (ja) 1991-03-29 1991-03-29 ディジタル信号符号化方法
PCT/JP1992/000237 WO1992017942A1 (fr) 1991-03-29 1992-02-28 Procede de codage de signaux numeriques

Publications (2)

Publication Number Publication Date
NO924552D0 NO924552D0 (no) 1992-11-25
NO924552L true NO924552L (no) 1993-01-22

Family

ID=26432649

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92924552A NO924552L (no) 1991-03-29 1992-11-25 Fremgangsmaate og anordning for koding av digitalt audiosignal

Country Status (17)

Country Link
US (1) US5311561A (no)
EP (1) EP0531538B1 (no)
KR (1) KR100312664B1 (no)
CN (1) CN1032102C (no)
AT (1) ATE165198T1 (no)
AU (1) AU654533B2 (no)
BR (1) BR9204799A (no)
CA (1) CA2083709A1 (no)
CS (1) CS92692A3 (no)
DE (1) DE69225100T2 (no)
DK (1) DK0531538T3 (no)
FI (1) FI109627B (no)
HU (1) HU213592B (no)
NO (1) NO924552L (no)
PL (1) PL168474B1 (no)
RU (1) RU2090973C1 (no)
WO (1) WO1992017942A1 (no)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479562A (en) * 1989-01-27 1995-12-26 Dolby Laboratories Licensing Corporation Method and apparatus for encoding and decoding audio information
US5752225A (en) * 1989-01-27 1998-05-12 Dolby Laboratories Licensing Corporation Method and apparatus for split-band encoding and split-band decoding of audio information using adaptive bit allocation to adjacent subbands
US5115240A (en) * 1989-09-26 1992-05-19 Sony Corporation Method and apparatus for encoding voice signals divided into a plurality of frequency bands
EP0535889B1 (en) * 1991-09-30 1998-11-11 Sony Corporation Method and apparatus for audio data compression
JP3104400B2 (ja) * 1992-04-27 2000-10-30 ソニー株式会社 オーディオ信号符号化装置及び方法
JP3278900B2 (ja) * 1992-05-07 2002-04-30 ソニー株式会社 データ符号化装置及び方法
JP3153933B2 (ja) * 1992-06-16 2001-04-09 ソニー株式会社 データ符号化装置及び方法並びにデータ復号化装置及び方法
JPH06180948A (ja) * 1992-12-11 1994-06-28 Sony Corp ディジタル信号処理装置又は方法、及び記録媒体
JP3186292B2 (ja) * 1993-02-02 2001-07-11 ソニー株式会社 高能率符号化方法及び装置
JP3123290B2 (ja) * 1993-03-09 2001-01-09 ソニー株式会社 圧縮データ記録装置及び方法、圧縮データ再生方法、記録媒体
JP3531177B2 (ja) * 1993-03-11 2004-05-24 ソニー株式会社 圧縮データ記録装置及び方法、圧縮データ再生方法
TW232116B (en) * 1993-04-14 1994-10-11 Sony Corp Method or device and recording media for signal conversion
JP3173218B2 (ja) * 1993-05-10 2001-06-04 ソニー株式会社 圧縮データ記録方法及び装置、圧縮データ再生方法、並びに記録媒体
US5581654A (en) * 1993-05-25 1996-12-03 Sony Corporation Method and apparatus for information encoding and decoding
ATE211326T1 (de) * 1993-05-31 2002-01-15 Sony Corp Verfahren und vorrichtung zum kodieren oder dekodieren von signalen und aufzeichnungsmedium
US5765126A (en) * 1993-06-30 1998-06-09 Sony Corporation Method and apparatus for variable length encoding of separated tone and noise characteristic components of an acoustic signal
US5632003A (en) * 1993-07-16 1997-05-20 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for coding method and apparatus
TW327223B (en) * 1993-09-28 1998-02-21 Sony Co Ltd Methods and apparatus for encoding an input signal broken into frequency components, methods and apparatus for decoding such encoded signal
US5566154A (en) * 1993-10-08 1996-10-15 Sony Corporation Digital signal processing apparatus, digital signal processing method and data recording medium
KR100330290B1 (ko) * 1993-11-04 2002-08-27 소니 가부시끼 가이샤 신호부호화장치,신호복호화장치,및신호부호화방법
EP0692881B1 (en) * 1993-11-09 2005-06-15 Sony Corporation Quantization apparatus, quantization method, high efficiency encoder, high efficiency encoding method, decoder, high efficiency encoder and recording media
US5764698A (en) * 1993-12-30 1998-06-09 International Business Machines Corporation Method and apparatus for efficient compression of high quality digital audio
US5608713A (en) * 1994-02-09 1997-03-04 Sony Corporation Bit allocation of digital audio signal blocks by non-linear processing
JPH07261797A (ja) * 1994-03-18 1995-10-13 Mitsubishi Electric Corp 信号符号化装置及び信号復号化装置
PL311812A1 (en) * 1994-04-01 1996-03-18 Sony Corp Method of and apparatus for encoding information, method of and apparatus fro decoding information, method of transmitting information and information recording medium
JP3186412B2 (ja) * 1994-04-01 2001-07-11 ソニー株式会社 情報符号化方法、情報復号化方法、及び情報伝送方法
JP3277677B2 (ja) * 1994-04-01 2002-04-22 ソニー株式会社 信号符号化方法及び装置、信号記録媒体、信号伝送方法、並びに信号復号化方法及び装置
JP3277682B2 (ja) * 1994-04-22 2002-04-22 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法
WO1995030286A2 (en) * 1994-05-02 1995-11-09 Philips Electronics N.V. Encoding system and encoding method for encoding a digital signal having at least a first and a second digital signal component
TW295747B (no) * 1994-06-13 1997-01-11 Sony Co Ltd
JP3277699B2 (ja) * 1994-06-13 2002-04-22 ソニー株式会社 信号符号化方法及び装置並びに信号復号化方法及び装置
US5787387A (en) * 1994-07-11 1998-07-28 Voxware, Inc. Harmonic adaptive speech coding method and system
JP3277705B2 (ja) 1994-07-27 2002-04-22 ソニー株式会社 情報符号化装置及び方法、並びに情報復号化装置及び方法
JP3341474B2 (ja) * 1994-07-28 2002-11-05 ソニー株式会社 情報符号化方法及び復号化方法、情報符号化装置及び復号化装置、並びに情報記録媒体
US5654952A (en) * 1994-10-28 1997-08-05 Sony Corporation Digital signal encoding method and apparatus and recording medium
JP3557674B2 (ja) * 1994-12-15 2004-08-25 ソニー株式会社 高能率符号化方法及び装置
JP3371590B2 (ja) * 1994-12-28 2003-01-27 ソニー株式会社 高能率符号化方法及び高能率復号化方法
US5940437A (en) * 1995-01-03 1999-08-17 Intel Corporation System and method for reducing the peak load on the processor of a block processing modem
JPH08190764A (ja) * 1995-01-05 1996-07-23 Sony Corp ディジタル信号処理方法、ディジタル信号処理装置及び記録媒体
US5682463A (en) * 1995-02-06 1997-10-28 Lucent Technologies Inc. Perceptual audio compression based on loudness uncertainty
US5734677A (en) * 1995-03-15 1998-03-31 The Chinese University Of Hong Kong Method for compression of loss-tolerant video image data from multiple sources
US5727119A (en) * 1995-03-27 1998-03-10 Dolby Laboratories Licensing Corporation Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase
JP3580444B2 (ja) * 1995-06-14 2004-10-20 ソニー株式会社 信号伝送方法および装置、並びに信号再生方法
JP3082625B2 (ja) * 1995-07-15 2000-08-28 日本電気株式会社 音声信号処理回路
JPH0969781A (ja) * 1995-08-31 1997-03-11 Nippon Steel Corp オーディオデータ符号化装置
DE69620967T2 (de) * 1995-09-19 2002-11-07 At & T Corp., New York Synthese von Sprachsignalen in Abwesenheit kodierter Parameter
US5819215A (en) * 1995-10-13 1998-10-06 Dobson; Kurt Method and apparatus for wavelet based data compression having adaptive bit rate control for compression of digital audio or other sensory data
JP3189660B2 (ja) 1996-01-30 2001-07-16 ソニー株式会社 信号符号化方法
JPH1083623A (ja) * 1996-09-10 1998-03-31 Sony Corp 信号記録方法、信号記録装置、記録媒体および信号処理方法
TW384434B (en) 1997-03-31 2000-03-11 Sony Corp Encoding method, device therefor, decoding method, device therefor and recording medium
US6026348A (en) * 1997-10-14 2000-02-15 Bently Nevada Corporation Apparatus and method for compressing measurement data correlative to machine status
US6507804B1 (en) 1997-10-14 2003-01-14 Bently Nevada Corporation Apparatus and method for compressing measurement data corelative to machine status
EP0966109B1 (en) * 1998-06-15 2005-04-27 Matsushita Electric Industrial Co., Ltd. Audio coding method and audio coding apparatus
DE19947877C2 (de) * 1999-10-05 2001-09-13 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Einbringen von Informationen in einen Datenstrom sowie Verfahren und Vorrichtung zum Codieren eines Audiosignals
US20020009000A1 (en) * 2000-01-18 2002-01-24 Qdesign Usa, Inc. Adding imperceptible noise to audio and other types of signals to cause significant degradation when compressed and decompressed
KR20060131798A (ko) * 2004-01-20 2006-12-20 돌비 레버러토리즈 라이쎈싱 코오포레이션 블록 그룹화에 기반한 오디오 코딩
CN101227983B (zh) 2005-06-14 2015-08-19 巴塞尔聚烯烃有限公司 性能改进的多层塑胶防腐蚀涂层
US8599925B2 (en) 2005-08-12 2013-12-03 Microsoft Corporation Efficient coding and decoding of transform blocks
GB201004667D0 (en) 2010-03-22 2010-05-05 Optimized Systems And Solution Method and apparatus for compression and de-compression of spectral data
RU2517356C2 (ru) * 2012-09-10 2014-05-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Мордовский государственный университет им. Н.П. Огарёва" Способ снижения нелинейных искажений тока в нелинейной комплексной нагрузке и устройство для его осуществления
CN104703093B (zh) * 2013-12-09 2018-07-17 中国移动通信集团公司 一种音频输出方法及装置
CN112019220B (zh) * 2020-08-21 2023-07-04 广东省新一代通信与网络创新研究院 一种基于差值偏置检测的块浮点数据压缩方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064119B1 (fr) * 1981-04-30 1985-08-28 International Business Machines Corporation Perfectionnement aux procédés de codage de la voix et dispositif de mise en oeuvre du procédé perfectionné
JPS60237738A (ja) * 1984-05-11 1985-11-26 Sony Corp デイジタル信号伝送装置
JP3010637B2 (ja) * 1989-07-29 2000-02-21 ソニー株式会社 量子化装置及び量子化方法
JP2913696B2 (ja) * 1989-09-30 1999-06-28 ソニー株式会社 ディジタル信号符号化方法
JP2811810B2 (ja) * 1989-10-05 1998-10-15 ソニー株式会社 信号符号化装置
JPH03132218A (ja) * 1989-10-18 1991-06-05 Sony Corp ディジタルデータの高能率符号化装置
JPH03132228A (ja) * 1989-10-18 1991-06-05 Victor Co Of Japan Ltd 直交変換信号符号化復号化方式
US5134475A (en) * 1990-12-11 1992-07-28 At&T Bell Laboratories Adaptive leak hdtv encoder

Also Published As

Publication number Publication date
HUT63278A (en) 1993-07-28
EP0531538B1 (en) 1998-04-15
CN1032102C (zh) 1996-06-19
WO1992017942A1 (fr) 1992-10-15
DE69225100D1 (de) 1998-05-20
HU9203759D0 (en) 1993-04-28
KR100312664B1 (ko) 2002-12-26
ATE165198T1 (de) 1998-05-15
HU213592B (en) 1997-08-28
AU654533B2 (en) 1994-11-10
FI925400A (fi) 1992-11-27
DE69225100T2 (de) 1998-08-06
AU1338392A (en) 1992-11-02
DK0531538T3 (da) 1998-10-19
EP0531538A4 (en) 1994-09-21
EP0531538A1 (en) 1993-03-17
PL294003A2 (en) 1992-11-30
FI925400A0 (fi) 1992-11-27
CA2083709A1 (en) 1992-09-30
RU2090973C1 (ru) 1997-09-20
PL168474B1 (pl) 1996-02-29
CS92692A3 (en) 1992-10-14
FI109627B (fi) 2002-09-13
NO924552D0 (no) 1992-11-25
BR9204799A (pt) 1993-07-13
US5311561A (en) 1994-05-10
CN1065565A (zh) 1992-10-21

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